clk: berlin: add driver for BG2x complex divider cells
This is a driver for the complex divider cells found on Marvell Berlin2
SoCs. The cells come in two flavors: single register cells and shared
register cells.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/clk/berlin/berlin2-div.h b/drivers/clk/berlin/berlin2-div.h
new file mode 100644
index 0000000..15e3384
--- /dev/null
+++ b/drivers/clk/berlin/berlin2-div.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2014 Marvell Technology Group Ltd.
+ *
+ * Alexandre Belloni <alexandre.belloni@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __BERLIN2_DIV_H
+#define __BERLIN2_DIV_H
+
+struct clk;
+
+#define BERLIN2_DIV_HAS_GATE BIT(0)
+#define BERLIN2_DIV_HAS_MUX BIT(1)
+
+#define BERLIN2_PLL_SELECT(_off, _sh) \
+ .pll_select_offs = _off, \
+ .pll_select_shift = _sh
+
+#define BERLIN2_PLL_SWITCH(_off, _sh) \
+ .pll_switch_offs = _off, \
+ .pll_switch_shift = _sh
+
+#define BERLIN2_DIV_SELECT(_off, _sh) \
+ .div_select_offs = _off, \
+ .div_select_shift = _sh
+
+#define BERLIN2_DIV_SWITCH(_off, _sh) \
+ .div_switch_offs = _off, \
+ .div_switch_shift = _sh
+
+#define BERLIN2_DIV_D3SWITCH(_off, _sh) \
+ .div3_switch_offs = _off, \
+ .div3_switch_shift = _sh
+
+#define BERLIN2_DIV_GATE(_off, _sh) \
+ .gate_offs = _off, \
+ .gate_shift = _sh
+
+#define BERLIN2_SINGLE_DIV(_off) \
+ BERLIN2_DIV_GATE(_off, 0), \
+ BERLIN2_PLL_SELECT(_off, 1), \
+ BERLIN2_PLL_SWITCH(_off, 4), \
+ BERLIN2_DIV_SWITCH(_off, 5), \
+ BERLIN2_DIV_D3SWITCH(_off, 6), \
+ BERLIN2_DIV_SELECT(_off, 7)
+
+struct berlin2_div_map {
+ u16 pll_select_offs;
+ u16 pll_switch_offs;
+ u16 div_select_offs;
+ u16 div_switch_offs;
+ u16 div3_switch_offs;
+ u16 gate_offs;
+ u8 pll_select_shift;
+ u8 pll_switch_shift;
+ u8 div_select_shift;
+ u8 div_switch_shift;
+ u8 div3_switch_shift;
+ u8 gate_shift;
+};
+
+struct berlin2_div_data {
+ const char *name;
+ const u8 *parent_ids;
+ int num_parents;
+ unsigned long flags;
+ struct berlin2_div_map map;
+ u8 div_flags;
+};
+
+struct clk * __init
+berlin2_div_register(const struct berlin2_div_map *map,
+ void __iomem *base, const char *name, u8 div_flags,
+ const char **parent_names, int num_parents,
+ unsigned long flags, spinlock_t *lock);
+
+#endif /* __BERLIN2_DIV_H */